Parallel plate Definition and 275 Threads

A parallel-plate fluid flow chamber is a benchtop (in vitro) model that simulates fluid shear stresses on various cell types exposed to dynamic fluid flow in their natural, physiological environment. The metabolic response of cells in vitro is associated with the wall shear stress.
A typical parallel-plate flow chamber consists of a polycarbonate distributor, a silicon gasket, and a glass coverslip. The distributor, forming one side of the parallel-plate flow chamber, includes inlet port, outlet port, and a vacuum slot. The thickness of the gasket determines the height of the flow path. The glass coverslip forms another side of the parallel-plate flow chamber and can be coated with extracellular matrix (ECM) proteins, vascular cells, or biomaterials of interest. A vacuum forms a seal to hold these three parts and ensures a uniform channel height.Typically, the fluid enters one side of the chamber and leaves from an opposite side. The upper plate is usually transparent while the bottom is a prepared surface on which the cells have been cultured for a predetermined period. Cell behavior is viewed with either transmitted or reflective light microscope.

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  1. P

    2 parallel plate conducts and dielectric-pic included

    I uploaded the problem statement and the answer in the solution manual. I think the manual is wrong for Q2 which should've been (200V)kC2 not 200VkC1, right?
  2. J

    Integral form of Gauss' Law, Parallel Plate Capacitor

    Homework Statement If one were to consider a parallel plate capacitor with a distance d between them connected to a battery and a vacuum space between the plates. Will the integral form of Gauss' Law to any closed surface between the plates that does not cross either plate hold? If not, what...
  3. O

    How Long for Electric Field to Vanish in a Photoelectron-Irradiated Capacitor?

    Homework Statement The negative plate of a charged, isolated parallel plate capacitor with a vacuum gap of width d and carrying a surface charge density s is uniformly irradiated with a short pulse of ultraviolet light whose photon energy is just enough to release a photoelectron at the...
  4. A

    Question regarding parallel plate capacitor

    Lets assume that there is a parallel plate capacitor connected across a supply of V volts. Then, there is charge redistribution between the plates such that finally the potential of positive plate wrt the negative plate is V volts. Let us assume air is the dielectric between the two plates. Now...
  5. B

    Solving Parallel Plate Capacitor Pendulum Oscillations

    1. Homework Statement PLEASE DO NOT DELETE THIS POST, MODS, IT MAY LOOK LIKE THE SAME QUESTION AS BEFORE, BUT IT IS NOT, IT IS A TOTALLY DIFFERENT PART TO THE QUESTION. consider a parallel=plate capacitor with square plates of side L and distance d (<<L) between them, charged with charges...
  6. C

    Find the E field of a parallel plate capacitor tilted at 45 degrees

    Homework Statement Find the E field of a parallel plate capacitor tilted at 45 degrees from vertical and moving at a speed v. each plate has plus or minus \sigma_0 for charge density. The Attempt at a Solution Well the E field in rest frame would be E= \frac{\sigma_0}{\epsilon_0}...
  7. hanley93

    About Electrostatic Forces on Parallel Plate Capacitor

    I've been thinking about this for a while, and I think people of PF will be able to answer it haha In parallel plate capacitor, we charge the capacitor by connecting a power supply/battery. Then, after few minutes, the capacitor is fully charged with different signs, + and -. With that...
  8. A

    Calculating Energe stored in a Parallel Plate Capacitor

    The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. The magnitude of the electric field between the plates is 100 kV/m. The plates each have an area of 2 × 10-3 m2, and the spacing between the plates is 6 × 10-3 m. There is...
  9. N

    Two circular discs spaced apart from a parallel plate capacitor ?

    Homework Statement Two circular disks spaced 0.50 mm apart from a parallel-plate capacitor. Transferring 1.90 x 10^9 electrons from one disk to the other causes the electric field strength to be 1.90 x 10^5 N/C. What are the diameters of the disks (in cm)? Homework Equations E = Q /...
  10. Y

    Question on finding inductance of parallel plate transmission line.

    Find the inductance per unit length of parallel plate tx line width = w and space =d between the two plates. w>>d. My question is whether the total inductance is twice the calculate inductance because total inductance is the sum of inductance of the top and the bottom plate. But it seems all...
  11. L

    How Does a Dielectric Constant Affect Capacitor Charge?

    Homework Statement A Parallel Plate Capacitor connected to a 12 V source is charged to 21 micro coulomb. If the capacitor is filled with an oil of dielectric constant 3, then the charge stored is --- Homework Equations The Attempt at a Solution C = q / V, substituting the values i...
  12. B

    What is the effect of unequal charges on a parallel plate capacitor?

    Homework Statement Ok so when you have a parallel place capacitor with a charge +Q on one plate and -Q on the other, you can use Q = CV etc., My question is: what happens when the two charges differ - i.e. one plate is Q1, the other is Q2. What is the capacitance, potential difference etc...
  13. L

    How Do You Calculate Electric Field and Potential in a Parallel Plate Capacitor?

    Homework Statement A parallel plate capacitor has a charge of 50pC area = 10mm^2 dielectric material permittivity = 2.5 distance between plates = 0.5 mm find the electric field the potential difference between the 2 plates the energy stored in the capacitor Homework Equations...
  14. P

    Ohm's Law - current within parallel plate capacitor imbedded in a large volume

    Homework Statement A parallel plate capacitor with plates of area A and separation d is imbedded in a large volume filled with a material with electric conductivity σ. Determine the total current I if the two capacitor plates are maintained at a potential difference Vo. Explain how such a...
  15. S

    Dielectric Filled Parallel Plate Capacitor Question

    Homework Statement A parallel plate capacitor has rectangular plates measuring 44.0 cm by 30.0 cm, and can be charged to 1600 V maximum ΔV without electrical breakdown. The gap between the plates is fulled with mylar dielectric (κ=3.2). Find the thickness of the dielectric.Homework Equations...
  16. O

    Dielectric and Parallel Plate Capacitor

    Homework Statement A 4.0-nF parallel plate capacitor with a sheet of Mylar (κ = 3.1) filling the space between the plates is charged to a potential difference of 120 V and is then disconnected. (The initial capacitance including the dielectric is 4.0 nF.) (i) How much work is required to...
  17. P

    Parallel plate capactiors otherside plate

    how can it be proved that the otherside of the charged parallel plate capacitor has some charge on it
  18. Y

    Question on TEM wave travel in parallel plate transmission line.

    I want to confirm that the TEM wave is actually travel inside the dielectric between the two plates of the parallel plate transmission line. So even though surface current and surface charge appeared on the surface of the conductor plates as the consequence of the boundary conditions between the...
  19. T

    Charging a parallel plate capacitor.

    I'm building a parallel-plate capacitor for a capacitance sensing circuit. If I let the capacitor fully charge, and then pulled the plates apart by 5 cm, how would that change the capacitance? Is there a formula to figure that out?
  20. M

    Parallel Plate Capacitor Question (Many Attempts)

    I have tried this set of questions which is from i-vii, I believe I am going wrong at a certain stage, as at question vi, the voltage is clearly wrong, below is the questions and my attempt. Sorry for the long post, any help on pointing out where I have gone wrong would be much appreciated...
  21. M

    What is the Capacitance of a Parallel Plate Capacitor with a Dielectric Sheet?

    A parallel plate capacitor is defined of two circular plates with a radius of 12cm, it is separated by a dielectric sheet with a thickness of 2 microns (um) and relative permittivity of 6. It is charged with a potential difference of 110V. The area of one plate I found is A=pie*R^2 =...
  22. K

    Calculating Potential Difference in a Suspended Parallel Plate Capacitor

    Homework Statement A small object with a mass of 420 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 2.00 cm. If the thread makes an angle of 18.0° with the vertical, what is the potential...
  23. C

    Parallel Plate Capacitor - Dielectric Oscillator

    In my high school calculus-based electricity class two students and I are trying to create a demo where we set up a parallel plate capacitor and have some dielectric material inside it that we can pull out slightly, and have it oscillate into and out of the capacitor. Some ideas we have...
  24. K

    Double Layer Parallel Plate Capacitor

    Homework Statement d=10cm; U=180kV; er1=5; Ep1=50 kV/cm; Ep2=30 kV/cm; Ep=breakdown strength. So you have a Parallel Plate Capacitor with two layers between the plates. One is air and it has the Ep2=30kV/cm, the other one has a Ep1=50 kV/cm and a relative permittivity of 5. The capacitor is...
  25. F

    Solving for Refraction Angle of Light Ray Across Parallel Plate

    Homework Statement We have a parallel, transparent plate. The plate has an incidence of refraction that is dependent on a transverse coordinate. (i.e. the plate is perpendicular to z direction, and the refractive index changes along x direction) n(x) = 1.5/(1 - x/0.13) It is observed...
  26. K

    Application of Gauss' Laws: Large area parallel plate capacitor

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  27. P

    Parallel plate capacitor with dielectric. Find capacitance

    Homework Statement The plates of a parallel plate capacitor measure 15cm x 15cm, and they are separated by 6cm. The capacitor is charged with a potential difference of 18V, then removed from the voltage source and kept isolated. A 15cm x 15cm x 3cm slab of dielectric material (k = 2.5) is...
  28. A

    What is the Energy Stored in a Parallel Plate Capacitor?

    Given: There are two parallel plates. The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. The magnitude of the electric field between the plates is 100 kV/m. The plates each have an area of 2 × 10-3 m2, and the spacing...
  29. D

    Parallel plate capacitor book problem

    Homework Statement Two parallel plates 0.700 cm apart are equally and oppositely charged. An electron is released from rest at the surface of the negative plate and simultaneously a proton is released from rest at the surface of the positive plate. How far from the negative plate is the...
  30. B

    2 Dielectrics in a Parallel Plate Capacitor

    So, I know what happens with the first two cases, but what if the dielectrics are on a diagonal?
  31. S

    Dielectric in parallel plate capacitor

    Homework Statement Two capacitors, identical except for the dielectric material between their plates, are connected in parallel. One has a material with a material with a dielectric constant of 2, while the other has a material with a dielectric constant of 3. What is the dielectric constant...
  32. S

    Simple parallel plate speed of charge question

    Homework Statement An alpha particle of +2 elementary charge and mass 6.7*10^-27 can be given some speed by placing it at rest on the positive side of the parallel plate. Ignoring gravity effects what speed does the partial have when it reaches negative plate. Homework Equations...
  33. L

    Solving Electron Deflection in a Parallel Plate Apparatus

    Homework Statement Question Reads: An electron enters a parallel plate apparatus 10 cm long and 2.0 wide, moving horizontally at 8.0 10 ^7 m/s. if the potential difference across the plates is 600V, determine a) the vertical deflection of the electron from its original path...
  34. M

    How Does a Multi-Dielectric Parallel Plate Capacitor Calculate Its Capacitance?

    We have got a parallel plate capacitor . The distance between the plates is 2*h and each plate's dimensions are a,b . Between the plates there exists dielectric e1 in the volume 0<z<h and e2 in the volume h<z<2*h (out of the plates e0 ) , with e1,e2>>e0 . At z=h we place another plate with...
  35. L

    Calculating Potential Difference and Work in a Parallel Plate Capacitor

    Homework Statement The area of the plates of a parallel plate capacitor is 1 m2, the spacing between the plates is 10 cm, the potential difference between the plates is 1500 V. After beign charged, the plates are disonnected electrically from the surroundings. The plates are then pulled...
  36. S

    Stored Energy in two Parallel Plate Capacitors

    Homework Statement The two-parallel-plate capacitors shown, C1=C and C2=KC, have identical plate area and plate separation. The switch S is closed, connecting the capacitors to a constant voltage power supply providing a potential difference of V. The capacitors are allowed to fully charge...
  37. T

    How Is Energy Loss Calculated in Connected Capacitors?

    Homework Statement A capacitor C1 (the one on top in the diagram) of capacitance 4 mu F is charged until its charge is 200 mu C and another capacitor C2 (the one below) of capacitance 3 mu F is charged until its charge is 300 mu C . Then both capacitors are connected in the circuit as shown in...
  38. T

    How Do You Calculate the Diameter of Plates in a Parallel Plate Capacitor?

    Homework Statement A parallel plate capacitor is made of two circular disks. The distance between the disks is very small compared to their diameter. Initially, the disks are electrically neutral. After transferring 3.9x10^9 electrons from one disk to the other, the electric field...
  39. P

    Understanding the Behavior of a Parallel Plate Capacitor: True or False?

    Homework Statement The diagram shows a parallel plate capacitor with plate area A and spacing d. The capacitor can be connected to a battery of potential difference V by closing the switch. Assume d² << A. 1. The force on plate 1 due to plate 2 is F = Q²/(4πε0d²) î, where Q is the...
  40. W

    Calculating the Effects of Removing Dielectric from Parallel Plate Capacitor

    A parallel plate capacitor of capacitance 10microfarads has the space between filled with material with (dielectric constant k)= 4.0. The capacitor is charged to a potential difference of 2.0V . With the capacitor connected to the battery the dielectric is removed. 1. The capacitance is F...
  41. jacksonpeeble

    Parallel Plate Capacitor Spacing Question

    If the length and width of each plate of a parallel plate capacitor were doubled, and the spacing between the plates was also doubled, by what factor does the capacitance change? I know that increasing the length and width of a plate increases its capacitance, and I thought that it was...
  42. F

    Surface charge density and more, for a parallel plate cap.

    Homework Statement An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.60 mm. 1. If a 25.0 V potential difference is applied to these plates, calculate the electric field between the plates. 2. What is the surface charge density...
  43. B

    Capacitance of a parallel plate capacitor with 2 dielectrics

    Homework Statement Find the capacitance of the parallel plate capacitor with 2 dielectrics below. Given that the parallel plate capacitor has area A = WL and the separation between plates is d. The Attempt at a Solution My method is to use integration. First solve for two small...
  44. G

    Parallel Plate Capacitor: Electric field strength, flux & magnetic field

    Homework Statement This is a question on a past paper of a second-year undergraduate physics paper. A parallel plate capacitor is charged and the voltage increases at a rate of dV/dt. The plate radius is R and the distance between the plates is d. (a) What is the electric field...
  45. M

    Simple Parallel Plate Capacitor Question

    Assuming a Parallel Plate Capacitor of area A, separation distance d, plate charges \pm Q: and plate charge densities \pm\sigma: In my textbook and in Wikipedia, Electric Field of a charged plane with large or infinite area: \frac{\sigma}{\epsilon} Electric Field between plates of...
  46. A

    Parallel plate capacitor with dielectric in a gravitational field.

    Homework Statement A square parallel plate capacitor with vertical plates of area A and distance d, charged with a constant charge Q and is completely filled with a dielectric material the same dimension as the gap between the plates, with dielectric constant k and mass m. Assuming the...
  47. M

    Trying to make a parallel plate capacitor

    Hi evry1 I am trying to make a parallel plate capacitor , which am using to make a capacitive proximity sensor. Question 1 I thought of making 2 plexiglass plates of dimension ( 90 X 50 X2.5 mm). An aluminium mesh is sandwiched between them. Now a positive voltage is supplied to...
  48. M

    Parallel plate capacitor electric field problem

    Homework Statement Two circular disks spaced 0.50 mm apart form a parallel-plate capacitor. Transferring 1.8*10^9 electrons from one disk to the other causes the electric field strength to be 1.3* 10^5 N/C. What are the diameters of the disks? Homework Equations F=k(q1)(q2)/r^2...
  49. L

    Circular Parallel Plate Capacitor

    I haven't figured it out yet, I find it way above my understanding of phyiscs Suppose we have two circular parallel plates or radii r, both the same radius. They have a Voltage difference of V and they are separated a distance d. What would be the Electric Field in the whole space? Actually...
  50. S

    What is the Work Required to Increase Separation of a Parallel Plate Capacitor?

    Homework Statement An isolated parallel-plate capacitor (not connected to a battery) has a charge of Q=1.4x10^-5 C. The separation between the plates initially is d=1.2 mm, and for this separation the capacitance is 3.1x10^-11 F. Calculate the work that must be don to pull the plates apart...
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